How to run two set of code in parallel using openmp in c++

Question

I have two function which are not related to each other for example:

int add(int num)
{ 
     int sum=0;
     for(i=0;i<num;++i)
         sum+=i;
    return sum;
}

int mul(int num)
{  
    int mul=1;
    for(int i=1;i<num;++i)
       mul * i;
    return mul;
}

and I am suing them as follow:

auto x=add(100);
auto m=mul(200);
cout<<a<< "    " <<m<<endl;

How can I run them in parallel using OpenMP? I know that I can run them in parallel if I create a new thread and run one of the functions in that thread and implement a sync mechanizim to make sure that both threads finisshes by time that cout is called.

Also I know that I can use openMP parallel for for my loops, but assume that it is not there.

@VladimirF Do you mean similar to the code presented at the answer to this question: stackoverflow.com/questions/2770911/… — mans
– mans, Commented May 11, 2015 at 15:43
@VladimirF Pleae put your comment in an answer so I can accept it. — mans
– mans, Commented May 15, 2015 at 15:48

Vladimir F Героям слава · Accepted Answer · 2015-05-20 14:33:22Z

1

The usual way to sort out this problem in OpenMP is the sections construct. It enables you to define parts of your sequential code, that can be computed concurrently by different threads. Each section starts with the omp section directive/pragma.

answered May 20, 2015 at 14:33

Vladimir F Героям слава

60.7k4 gold badges82 silver badges131 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

How to run two set of code in parallel using openmp in c++

1 Answer 1

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related